Abstract
PLATYCARPA, with a flattened fruit body, is based on type P. polypodii (Septopasidium p. Couch) on Polypodium sp., Jamaica; and P. boliviensis, on fern, Bolivia. Platycarpa is compared with Jola and Eocronartium on mosses and Herpobasidium on ferns. The possibility that Septobasidium may have arisen from such a genus as Platycarpa is discussed. The n. comb. Helicogloea alba (Septobasidium album Burt) is made because of the striking similarity in probasidial, basidial, and spore characters, as well as in vegetative characters.

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